Cardionet Inc (NASDAQ:BEAT) dropped more than 17% in after hours. The company said that it received a civil investigative demand from the U.S. Justice Department concerning allegations that it may have used inappropriate diagnosis codes when submitting Medicare claims.

LGF- Lions Gate Entertainment Corp. (NYSE:LGF)

Lions Gate Entertainment Corp. (NYSE:LGF) dropped 4.7% to $7.17. Billionaire investor Carl Icahn agreed to sell his Lions Gate Entertainment Corp. shares for $7 each, roughly his cost, to end a battle for control over the independent film and television studio.

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